Castle Island Weather Forecast

    • 44
    • 51

    Rain Showers Likely

    • 42
    • 52

    Chance Rain Showers

    • 43
    • 53

    Partly Sunny

    • 45
    • 54

    Partly Sunny

    • 46
    • 55

    Partly Sunny

    • 45
    • 55

    Chance Rain Showers

    • 40
    • 51

    Chance Rain Showers

Today 28 Mar San Juan County

Breezy. Partly sunny with a chance of Showers. Highs in the upper 40s to mid 50s. Southeast wind 15 to 25 Mph.

Tonight 28 Mar San Juan County

Breezy. Mostly cloudy with Showers likely in the Evening, then mostly cloudy with a chance of Showers after midnight. Rainfall Amounts less than a tenth of an inch likely. Lows in the 40s. Southeast wind 15 to 25 Mph. Gusts to 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Castle Island Temperature Statistics

March Temperature

Whidbey Island Naval Air Station - Ault Field (8.1 miles)

  • Lowest 5 March, 2024

    28.9 °F
  • Average March

    44.6 °F
  • Highest 16 March, 2024

    66 °F

Climate (2019–Present)

Whidbey Island Naval Air Station - Ault Field (8.1 miles)

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  • Average Low 2019–2024

    45.2 °F
  • Average 2019–2024

    50.9 °F
  • Average High 2019–2024

    57 °F
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